Clarify build instructions for iOS, macOS, and tvOS test applications

Author: jasonacox

example/iOS Test App/README.md

@@ -4,11 +4,14 @@ This is a test app for iOS using the curl, openssl and nghttp2 libraries.
 
 ## Build Instructions
 
-Build the libraries with Mac Catalyst support:
+The `libs` and `include` folders will be created during the build. These are required to build and run the Test application in Xcode. Build the libraries with this command:
 
 ```bash
 # Build Mac Catalyst Support for iOS Target 15.0
 ./build.sh -m -u 15.0
+
+# Minimum build support
+./build.sh -p ios
 ```
 
 Load and build the project using Xcode. Example lib binaries (xcframework)and header files are included but will be replaced when you run the build script.

example/macOS Test App/README.md

@@ -10,10 +10,10 @@ macOS Test Build
 
 ## Build Instructions
 
-Build the libraries with macOS support:
+The `libs` and `include` folders will be created during the build. These are required to build and run the Test application in Xcode. Build the libraries with this command:
 
 ```bash
-# Standard Build
+# Build for all platforms
 ./build.sh
 
 # Option: Build only macOS

example/tvOS Test App/README.md

@@ -10,10 +10,10 @@ tvOS Test Build
 
 ## Build Instructions
 
-Build the libraries with tvOS support:
+The `libs` and `include` folders will be created during the build. These are required to build and run the Test application in Xcode. Build the libraries with this command:
 
 ```bash
-# Standard Build
+# Build for all platforms
 ./build.sh
 
 # Option: Build only tvOS